FR2901227A1 - Motor cycle yoke for performing e.g. steering function, has lower T-shaped part allowing concentric locking of yoke shafts when shafts are locked by threaded rings, and clamps allowing to immobilize shafts with specific degrees of latitude - Google Patents
Motor cycle yoke for performing e.g. steering function, has lower T-shaped part allowing concentric locking of yoke shafts when shafts are locked by threaded rings, and clamps allowing to immobilize shafts with specific degrees of latitude Download PDFInfo
- Publication number
- FR2901227A1 FR2901227A1 FR0604518A FR0604518A FR2901227A1 FR 2901227 A1 FR2901227 A1 FR 2901227A1 FR 0604518 A FR0604518 A FR 0604518A FR 0604518 A FR0604518 A FR 0604518A FR 2901227 A1 FR2901227 A1 FR 2901227A1
- Authority
- FR
- France
- Prior art keywords
- shafts
- yoke
- clamps
- fork
- allowing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/04—Fork crowns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/18—Connections between forks and handlebars or handlebar stems
- B62K21/22—Connections between forks and handlebars or handlebar stems adjustable
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
Abstract
Description
-1- La présente invention concerne un système permettant de modifierThe present invention relates to a system for modifying
facilement la géométrie avant d'une motocyclette afin d'adapter son comportement dynamique à l'usage que lui destine précisément son utilisateur en utilisant un principe différent des réalisations connues à ce jour ex : brevet deposé par Mr LAGARRE REF (WO2004009431). easily the front geometry of a motorcycle in order to adapt its dynamic behavior to the use that specifically intends its user using a different principle of achievements known to date ex patent filed by Mr LAGARRE REF (WO2004009431).
Généralement sur une motocyclette le train avant est composé d'une fourche dite télescopique, cette dernière assurant simultanément la fonction direction et la fonction suspension. Le comportement de la motocyclette est tributaire de la géométrie du train avant, cette dernière étant figée par construction selon les choix de son concepteur en accord avec l'utilisation envisagée de la machine. La géométrie du train avant est définie d'une part par l'angle entre l'axe de la colonne de direction et un axe fictif perpendiculaire au sol, cet angle est appelé angle de chasse , et d'autre part par la distance entre le point d'intersection de l'axe de la colonne de direction au sol et une perpendiculaire au sol passant par l'axe de rotation de la roue avant. Cette distance est nommée chasse au sol . Generally on a motorcycle the front axle is composed of a so-called telescopic fork, the latter simultaneously providing the steering function and the suspension function. The behavior of the motorcycle is dependent on the geometry of the front axle, the latter being frozen by construction according to the choices of its designer in accordance with the intended use of the machine. The geometry of the nosewheel is defined on the one hand by the angle between the axis of the steering column and a fictitious axis perpendicular to the ground, this angle is called the hunting angle, and on the other hand by the distance between the intersection point of the axis of the steering column on the ground and a perpendicular to the ground passing through the axis of rotation of the front wheel. This distance is called ground hunting.
La présente invention propose par l'intermédiaire de Tés spéciaux de faire varier aisément et rapidement les valeurs de chasse au sol (-c- fig. 3 û fig. 4).De par son mode de fixation des fourreaux de fourche (10)dans le Té inférieur la présente invention améliore sensiblement la fonction suspension en utilisant un serrage des fourreaux concentrique entraînant peu de déformation de ces derniers. The present invention proposes, by means of special tees, to easily and rapidly vary the flushing values (-c- Fig. 3 - Fig. 4) .From its method of fixing the fork sleeves (10) in the lower tee the present invention substantially improves the suspension function using a concentric clamping sleeves causing little deformation of the latter.
La présente invention est constituée d'un Té inférieur (1) recevant deux pinces sphériques (2) assurant un serrage concentrique des fourreaux de fourche (10) lorsqu'elles sont serrées par les deux bagues filetées à portée sphérique(3).De par leurs formes extérieures sphériques,ces deux pinces (2) permettent d'immobiliser les fourreaux de fourche avec quelques degrés de latitude par rapport à un axe perpendiculaire au dessus du Té. Un axe de colonne de direction (4) emmanché solidaire au té inférieur permet d'installer ce dernier classiquement sur le cadre de la motocyclette. Le Té supérieur est composé de trois pièces assemblées, une chape inférieure (6) qui est traversée de façon ajustée en son centre par l'axe de colonne de direction et dont les côtés sont guidés précisément dans une rainure pratiquée sous le té supérieur (5) suivant l'axe longitudinal de la moto .Une rainure oblongue usinée dans le Té supérieur suivant ce même axe longitudinal permet à l'axe de direction de traverser ce dernier. Les fourreaux de fourche (10) lui sont assemblés à l'aide de fixations habituellement 30 35 -2- utilisées. La chape supérieure (7) traversée en son centre de façon ajustée par l'axe de colonne de direction permet grâce à l'ensemble écrou/rondelle (8) de bloquer le tout. Les faces de contact entre les chapes et le Té supérieur sont des parties cylindriques dont l'axe est un axe fictif passant par le centre des deux pinces sphériques du Té inférieur. Ces formes spécifiques et le fait que l'axe de colonne de direction traverse le Té supérieur dans une rainure, permettent un mouvement angulaire de l'ensemble composé du Té supérieur et des fourreaux de fourche(10) autour de l'axe des pinces sphériques, ce qui influe sur la valeur de chasse au sol. The present invention consists of a lower tee (1) receiving two spherical claws (2) ensuring a concentric clamping of the fork sleeves (10) when they are tightened by the two spherical bearing threaded rings (3). their spherical outer forms, these two clamps (2) can immobilize the fork legs with a few degrees of latitude relative to an axis perpendicular to the top of the tee. A steering column shaft (4) secured to the lower handle allows to install the latter conventionally on the frame of the motorcycle. The upper tee is composed of three pieces assembled, a lower clevis (6) which is traversed in a way adjusted at its center by the axis of the steering column and whose sides are precisely guided in a groove made under the upper tee (5). ) along the longitudinal axis of the motorcycle. An oblong groove machined in the upper tee along the same longitudinal axis allows the steering axis to cross the latter. The fork legs (10) are assembled to it with the usual fasteners used. The upper clevis (7) traversed at its center in a manner adjusted by the steering column axis allows thanks to the nut / washer assembly (8) to block the whole. The contact faces between the yokes and the upper tee are cylindrical parts whose axis is a fictitious axis passing through the center of the two spherical clamps of the lower tee. These specific shapes and the fact that the steering column axis passes through the upper tee in a groove, allow angular movement of the assembly consisting of the upper tee and the fork sleeves (10) around the axis of the spherical clamps. , which affects the value of ground hunting.
Pour éviter tout risque de glissement, la face de contact entre le té supérieur et la chape supérieure est crantée perpendiculairement à l'axe médian. To avoid any risk of slipping, the contact face between the upper tee and the upper yoke is notched perpendicularly to the central axis.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0604518A FR2901227B1 (en) | 2006-05-19 | 2006-05-19 | VARIABLE GEOMETRY MOTORCYCLE FORK TEAM |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0604518A FR2901227B1 (en) | 2006-05-19 | 2006-05-19 | VARIABLE GEOMETRY MOTORCYCLE FORK TEAM |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2901227A1 true FR2901227A1 (en) | 2007-11-23 |
FR2901227B1 FR2901227B1 (en) | 2008-08-15 |
Family
ID=37315146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR0604518A Expired - Fee Related FR2901227B1 (en) | 2006-05-19 | 2006-05-19 | VARIABLE GEOMETRY MOTORCYCLE FORK TEAM |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2901227B1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2130755A1 (en) * | 2008-05-14 | 2009-12-09 | Yamaha Hatsudoki Kabushiki Kaisha | Front wheel support structure of motorcycle |
WO2011067526A1 (en) * | 2009-12-03 | 2011-06-09 | S.T.W.M. | Flange-based securing system for a vehicle suspension fork |
ITMI20111003A1 (en) * | 2011-06-01 | 2012-12-02 | Pz5 S R L | FORK ATTACK GROUP WITH DOUBLE ADJUSTMENT. |
EP3031708A1 (en) * | 2014-12-12 | 2016-06-15 | Vysoká Skola Bánská - Technická Univerzita Ostrava | Device for changing suspension geometry of a vehicle |
CN107600279A (en) * | 2017-10-15 | 2018-01-19 | 江苏新光华机械有限公司 | Motorcycle steering gear |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB570439A (en) * | 1943-07-30 | 1945-07-06 | Leslie Mark Ballamy | Improvements in or relating to steering mechanism, particularly for motor bicycles |
US5967538A (en) * | 1998-04-23 | 1999-10-19 | Callaluca; Peter A. | Adjustable motorcycle triple tree |
FR2842491A1 (en) * | 2002-07-19 | 2004-01-23 | Jean Paul Lagar | DEVICE FOR FIXING THE FRONT AXLE TO THE CHASSIS OF A MOTORCYCLE WITH ADJUSTABLE ANGLE OF HUNTING AND GROUND HUNTING |
DE20315353U1 (en) * | 2003-10-06 | 2004-02-12 | Friedmann, Jens | Motorcycle steering geometry adjustment assembly has a fork upper head with fine teeth receiving matching outer teeth in the steering assembly inner tube |
GB2413538A (en) * | 2004-04-13 | 2005-11-02 | Benjamin John Ridehough | Motorcycle front fork assembly |
-
2006
- 2006-05-19 FR FR0604518A patent/FR2901227B1/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB570439A (en) * | 1943-07-30 | 1945-07-06 | Leslie Mark Ballamy | Improvements in or relating to steering mechanism, particularly for motor bicycles |
US5967538A (en) * | 1998-04-23 | 1999-10-19 | Callaluca; Peter A. | Adjustable motorcycle triple tree |
FR2842491A1 (en) * | 2002-07-19 | 2004-01-23 | Jean Paul Lagar | DEVICE FOR FIXING THE FRONT AXLE TO THE CHASSIS OF A MOTORCYCLE WITH ADJUSTABLE ANGLE OF HUNTING AND GROUND HUNTING |
WO2004009431A1 (en) | 2002-07-19 | 2004-01-29 | Jean-Paul Lagar | Device for fixing the front end assembly of a motorcycle with caster angle and adjustable ground caster angle |
DE20315353U1 (en) * | 2003-10-06 | 2004-02-12 | Friedmann, Jens | Motorcycle steering geometry adjustment assembly has a fork upper head with fine teeth receiving matching outer teeth in the steering assembly inner tube |
GB2413538A (en) * | 2004-04-13 | 2005-11-02 | Benjamin John Ridehough | Motorcycle front fork assembly |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2130755A1 (en) * | 2008-05-14 | 2009-12-09 | Yamaha Hatsudoki Kabushiki Kaisha | Front wheel support structure of motorcycle |
WO2011067526A1 (en) * | 2009-12-03 | 2011-06-09 | S.T.W.M. | Flange-based securing system for a vehicle suspension fork |
FR2953482A1 (en) * | 2009-12-03 | 2011-06-10 | S T W M | CLAMPING SYSTEM FOR A VEHICLE SUSPENSION FORK. |
US8833785B2 (en) | 2009-12-03 | 2014-09-16 | Eurl Stephane Wagner Mecanique | Clamping system for a vehicle fork with a suspension system |
ITMI20111003A1 (en) * | 2011-06-01 | 2012-12-02 | Pz5 S R L | FORK ATTACK GROUP WITH DOUBLE ADJUSTMENT. |
EP3031708A1 (en) * | 2014-12-12 | 2016-06-15 | Vysoká Skola Bánská - Technická Univerzita Ostrava | Device for changing suspension geometry of a vehicle |
CN107600279A (en) * | 2017-10-15 | 2018-01-19 | 江苏新光华机械有限公司 | Motorcycle steering gear |
CN107600279B (en) * | 2017-10-15 | 2024-02-02 | 江苏新光华机械有限公司 | Steering device for motorcycle |
Also Published As
Publication number | Publication date |
---|---|
FR2901227B1 (en) | 2008-08-15 |
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